constexpr bool try_drop_prefix (std::size_t count)
{
const auto splitting = split_prefix(count);
if (std::get<2>(splitting) == count)
*this = std::get<1>(splitting);
return std::get<2>(splitting) == count;
}
constexpr bool try_drop_prefix (BoundedSequence<char32_t> prefix)
{
const auto splitting = split_prefix(std::move(prefix));
if (not std::get<2>(splitting))
*this = std::get<1>(splitting);
return not std::get<2>(splitting);
}
constexpr std::tuple<utf8_view, utf8_view> span_prefix (S characters) const
{
const auto splitting = split_prefix([characters=std::move(characters)](char32_t element)
{
return fold([element=std::move(element)](auto, auto character)
{
const auto isEqual = element == character;
return std::make_tuple(isEqual, not isEqual);
}, false, characters);
});
return std::make_tuple(std::get<0>(splitting), std::get<1>(splitting));
}
constexpr bool match (S characters) const
{
const auto splitting = split_prefix(std::move(characters));
return not std::get<1>(splitting) and not std::get<2>(splitting);
}
void drop_prefix (S other)
{
const auto splitting = split_prefix(std::move(other));
*this = std::get<1>(splitting);
}
void drop_prefix (C predictor)
{
const auto splitting = split_prefix(std::move(predictor));
*this = std::get<1>(splitting);
}
void take_prefix (S other)
{
const auto splitting = split_prefix(std::move(other));
*this = std::get<0>(splitting);
}
static GPtrArray *
read_ip6_routes (GKeyFile *file,
const char *setting_name,
const char *key)
{
GPtrArray *routes;
struct in6_addr addr;
guint32 prefix, metric;
int i = 0;
routes = g_ptr_array_sized_new (3);
/* Look for individual routes */
while (i++ < 1000) {
gchar **tmp;
char *key_name, *str_prefix;
gsize length = 0;
int ret;
GValueArray *values;
GByteArray *address;
GValue value = { 0 };
key_name = g_strdup_printf ("%s%d", key, i);
tmp = g_key_file_get_string_list (file, setting_name, key_name, &length, NULL);
g_free (key_name);
if (!tmp || !length)
break; /* all done */
if (length != 3) {
g_warning ("%s: ignoring invalid IPv6 address item '%s'", __func__, key_name);
goto next;
}
/* convert the string array into IPv6 routes */
values = g_value_array_new (4); /* NMIP6Route has 4 items */
/* Split the route and prefix */
str_prefix = split_prefix (tmp[0]);
/* destination address */
ret = inet_pton (AF_INET6, tmp[0], &addr);
if (ret <= 0) {
g_warning ("%s: ignoring invalid IPv6 %s element '%s'", __func__, key_name, tmp[0]);
g_value_array_free (values);
goto next;
}
address = g_byte_array_new ();
g_byte_array_append (address, (guint8 *) addr.s6_addr, 16);
g_value_init (&value, DBUS_TYPE_G_UCHAR_ARRAY);
g_value_take_boxed (&value, address);
g_value_array_append (values, &value);
g_value_unset (&value);
/* prefix */
prefix = 0;
if (str_prefix) {
if (!get_one_int (str_prefix, 128, key_name, &prefix)) {
g_value_array_free (values);
goto next;
}
} else {
/* default to 64 if unspecified */
prefix = 64;
}
g_value_init (&value, G_TYPE_UINT);
g_value_set_uint (&value, prefix);
g_value_array_append (values, &value);
g_value_unset (&value);
/* next hop address */
ret = inet_pton (AF_INET6, tmp[1], &addr);
if (ret <= 0) {
g_warning ("%s: ignoring invalid IPv6 %s element '%s'", __func__, key_name, tmp[1]);
g_value_array_free (values);
goto next;
}
address = g_byte_array_new ();
g_byte_array_append (address, (guint8 *) addr.s6_addr, 16);
g_value_init (&value, DBUS_TYPE_G_UCHAR_ARRAY);
g_value_take_boxed (&value, address);
g_value_array_append (values, &value);
g_value_unset (&value);
/* metric */
metric = 0;
if (!get_one_int (tmp[2], G_MAXUINT32, key_name, &metric)) {
g_value_array_free (values);
goto next;
}
g_value_init (&value, G_TYPE_UINT);
g_value_set_uint (&value, metric);
g_value_array_append (values, &value);
g_value_unset (&value);
g_ptr_array_add (routes, values);
next:
g_strfreev (tmp);
}
if (routes->len < 1) {
g_ptr_array_free (routes, TRUE);
routes = NULL;
}
return routes;
}
static GPtrArray *
read_ip6_addresses (GKeyFile *file,
const char *setting_name,
const char *key)
{
GPtrArray *addresses;
struct in6_addr addr, gw;
guint32 prefix;
int i = 0;
addresses = g_ptr_array_sized_new (3);
/* Look for individual addresses */
while (i++ < 1000) {
char *tmp, *key_name, *str_prefix, *str_gw;
int ret;
GValueArray *values;
GByteArray *address;
GByteArray *gateway;
GValue value = { 0 };
key_name = g_strdup_printf ("%s%d", key, i);
tmp = g_key_file_get_string (file, setting_name, key_name, NULL);
g_free (key_name);
if (!tmp)
break; /* all done */
/* convert the string array into IPv6 addresses */
values = g_value_array_new (2); /* NMIP6Address has 2 items */
/* Split the address and prefix */
str_prefix = split_prefix (tmp);
/* address */
ret = inet_pton (AF_INET6, tmp, &addr);
if (ret <= 0) {
g_warning ("%s: ignoring invalid IPv6 %s element '%s'", __func__, key_name, tmp);
g_value_array_free (values);
goto next;
}
address = g_byte_array_new ();
g_byte_array_append (address, (guint8 *) addr.s6_addr, 16);
g_value_init (&value, DBUS_TYPE_G_UCHAR_ARRAY);
g_value_take_boxed (&value, address);
g_value_array_append (values, &value);
g_value_unset (&value);
/* prefix */
prefix = 0;
if (str_prefix) {
if (!get_one_int (str_prefix, 128, key_name, &prefix)) {
g_value_array_free (values);
goto next;
}
} else {
/* Missing prefix defaults to /64 */
prefix = 64;
}
g_value_init (&value, G_TYPE_UINT);
g_value_set_uint (&value, prefix);
g_value_array_append (values, &value);
g_value_unset (&value);
/* Gateway (optional) */
str_gw = split_gw (str_prefix);
if (str_gw) {
ret = inet_pton (AF_INET6, str_gw, &gw);
if (ret <= 0) {
g_warning ("%s: ignoring invalid IPv6 %s gateway '%s'", __func__, key_name, tmp);
g_value_array_free (values);
goto next;
}
if (!IN6_IS_ADDR_UNSPECIFIED (&gw)) {
gateway = g_byte_array_new ();
g_byte_array_append (gateway, (guint8 *) gw.s6_addr, 16);
g_value_init (&value, DBUS_TYPE_G_UCHAR_ARRAY);
g_value_take_boxed (&value, gateway);
g_value_array_append (values, &value);
g_value_unset (&value);
}
}
g_ptr_array_add (addresses, values);
next:
g_free (tmp);
}
if (addresses->len < 1) {
g_ptr_array_free (addresses, TRUE);
addresses = NULL;
}
return addresses;
}